Language varieties refer to the different forms of a language that arise due to factors like region, social class, or context. These variations can include dialects, which are regional differences in pronunciation and vocabulary, and sociolects, which are influenced by social groups. For example, African American Vernacular English (AAVE) is a sociolect with unique grammatical structures and vocabulary. Another aspect of language varieties is register, which refers to the level of formality used in communication. Different situations may require different registers, such as formal language for academic writing and informal language for casual conversations. Understanding these varieties helps in effective communication across diverse groups.